ghost effect and black borders

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Hi

I'm having a strange problem while capturing (no streaming):
- I have a black border around the picture
- I have a "ghost" effect where translucent borders are visible around objects

My configuration: Linux 2.4.21, bt878 chipset, PAL (using PLL), 768x576, 8bit GRAY capture.
The video signal comes from a B&W video surveillance cam.

Any idea where this could come from ?

It's very critical for an embedded application and I'm also really short on time... so I would be thankful for any information about this ;)

--
  -o) Pascal Bleser        http://guru.unixtech.be
  /\\ <pascal.bleser@xxxxxxxxx> <guru@xxxxxxxxxxx>
 _\_v The more things change, the more they stay insane.




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